基于QPVA的燃料电池电纺阴离子交换膜

A. Samsudin, V. Hacker
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引用次数: 0

摘要

阴离子交换膜是碱性阴离子交换膜燃料电池的核心部件之一,在燃料电池中起着至关重要且密不可分的作用。以季铵聚乙烯醇(QPVA)为原料,采用静电纺丝法制备了阴离子交换膜。QPVA既用作电纺纤维垫的材料,又用作纤维间空隙基质的填料。本工作的目的是研究纤维间空隙基质填料浓度对eQPVA-x AEM性能的影响。FTIR光谱用于鉴定AEM的化学结构。检测了PVA和季铵基离子导电阳离子的主要官能团。用SEM观察了QPVA纳米纤维毡和eQPVA-x AEM的表面形态。在SEM照片中观察到平均尺寸为100.96nm的QPVA电纺纳米纤维结构。测定了离子交换容量、溶胀性能、吸水率和OH离子电导率,以评估eQPVA-x AEM的性能。通过加入5 wt.%浓度的QPVA基质,eQPVA-5.0 AEM获得了最高的离子交换容量、吸水性、溶胀性和OH−电导率,分别为0.82 mmol g−1、25.5%、19.9%和2.26 m×s cm−1。静电纺丝QPVA AEM具有加速碱性阴离子交换膜燃料电池发展的潜力。
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QPVA-Based Electrospun Anion Exchange Membrane for Fuel Cells
The anion exchange membrane is one of the core components that play a crucial and inseparable role in alkaline anion exchange membrane fuel cells. Anion exchange membranes (AEMs) were prepared from quaternary ammonium poly(vinyl alcohol) (QPVA) by an electrospinning method. QPVA was used both as material for electrospun fiber mats and as filler for the inter-fiber void matrix. The objective of this work is to investigate the influence of the inter-fibers void matrix filler concentration on the properties and performance of eQPVA-x AEMs. FTIR spectra were used to identify the chemical structures of the AEMs. The primary functional groups of PVA and quaternary ammonium-based ion conducting cation were detected. The surface morphology of QPVA nanofiber mats and eQPVA-x AEMs was observed using SEM. Electrospun nanofiber structures of QPVA with an average size of 100.96 nm were observed in SEM pictures. The ion exchange capacity, swelling properties, water uptake, and OH-ions conductivity were determined to evaluate the performance of eQPVA-x AEMs.  By incorporating the QPVA matrix of 5 wt.% concentration, the eQPVA-5.0 AEMs attained the highest ion exchange capacity, water uptake, swelling properties, and OH− conductivity of 0.82 mmol g−1, 25.5%, 19.9%, and 2.26 m×s cm−1, respectively. Electrospun QPVA AEMs have the potential to accelerate the development of alkaline anion exchange membrane fuel cells.
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来源期刊
CiteScore
4.50
自引率
16.00%
发文量
83
审稿时长
8 weeks
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